Draw-detecting mechanism for looms.



No. 65l,704. Patented lune l2, I900.

W. G. EATON.

DRAW DETECTING MECHANISM FOR LOUMS.

(Application filed Max.- 10, 1900.)

(No Model.)

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UNITED STATES PATENT ()FFICE.

WILLIE G. EATON, OF NASHUA, NEW HAMPSHIRE, ASSIGNOR TO THE DRAPER COMPANY, OF PORTLAND, MAINE, AN-D I-IOPEDALE, MASSACHUSETTS.

DRAW-DETECTING MECHANISM FOR LOOlVlS.

SPECIFICATION forming pait of Letters Patent No. 651,704, dated June 12, 1900.

' Application filed March I0, 1900- Serial No. 8,176. (No model.)

T at within it may concern.-

Be itknown that I, WILLIE G. EATON, a citizen of the United States, and a resident of Nashua, New Hampshire, have invented an Improvement in Draw-Detecting Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

ro In weaving cloth draws sometimes occur, the term draw being applied to the sticking together of warp-threads back of the leasing means by slashing material, a draw acting to tighten up the threads in such a manner as to make a bad-looking place in the cloth.

My present invention has for its object the production of means for stopping automatically a loom upon the occurrence of a draw.

As the formation of draws only occurs with poor warps, it is unnecessary to provide all looms with stopping means embodying my invention, but it is requisite that such stopping means be simple in construction and operation, so that it can be readily applied to any loom on which the trouble occurs.

One practical embodiment of my invention is hereinshown and described applied to a loom provided with warp-stop-motion mech- 3o anism.

Figure l is a longitudinal sectional view of a portion of a loom provided with warp-stopmotion mechanism with one embodiment of my invention applied to the loom. Fig. 2 is a 3 5 perspective view of the draw-detecting means, showing its cooperation with the lease-rods; and Fig. 3 is a sectional detail similar to Fig. 1, showing the draw-detecting means in abnormal or operative position.

0' Referring to Fig. l, the loom-frame A, harnesses II, whip-roll W', Warp-stop-motion detectors d, maintained in normal inoperative position by intact warp-threads, a normallyvibrating feeler f, mounted on a rock-shaft 5 f, having a rigidly-attached arm f and the lease-rods L L may be and are of any wellknown or usual construction, a dropped detector engaging and arresting the feeler f and through suitable intermediate mechanism (not shown) releasing the shipper-lever S from its holding-plate to stop the loom, as in United States Patent No. 62l,3l0,dated March 14, 1899, and the vibrating movement of the feeler may be conveniently efiected by mechanism shown in said patent transmitted through the link f the said mechanism forming part of stopping means for the loom, as

in the patent referred to. The lease-rods are held in operative position by usual leather and Wire connections 0 c and prevented from being pulled by the warps toward the harnesses.

I have herein shown the draw-detecting means as comprising a rod or rock-shaft a, mounted in brackets A on the loom-frame in front of and below the front lease-rod L, I said shaft having fast thereon one or more detector-fingers a upturned through the warps and held against the front lease-rod by a weight w on an arm a, fast on the rockshaft a. As herein shown, one end of the shaft or rod a is bent forward and downward, as at a and turned down at its extremity at a to form a detent, which is normally held out of the path of the feeler f by the weight 20 which latter also holds the detector-fingers a against the adjacent leaserod L and prevent-s forward motion of the latter. When, however, an abnormal pull on the lease-rod occurs, due to the warpthreads not separating, forming a draw, as at d Fig. 3, the lease-rods will be pulled forward, tipping the detector-fingersct and rocking the shaft a to move the detent a into the path of and to arrest the feelerf. Such 8 engagement with and arrest of the feeler operates to efiect the actuation of the stopping means for the loom precisely as if the feeler had been engaged by a dropped detector cl, and the loom is stopped, enabling the weaver to correct the error and start the loom up.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be varied or rearranged without departing from the spirit and scope of my invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom, stopping means therefor, in eluding a normally vibrating feeler, and draw-detecting means, including arocking detector-finger movable into abnormal position upon the occurrence of a draw, and a fceler-detent movable into position to engage the feeler when the detector-finger is moved,

such engagement efiecting the operation of the stopping means. 7

2. In a loom, lease-rods, a rock-shaft in front thereof and having one or morefdedetector, and a' normally vibrating feeler forming part of stopping means for the loom, engagement of the feeler and detent operating to effect stoppage of the loom.

4. In a loom,warp-s top-motion mechanism,

including a normally-vibrating feeler and a series of detectors ,controlled by the warpthreads, and draw-detecting means, including a detent movable into position to engage the feeler upon the occurrence of a draw, such engagement, or engagement of the feelerand a warp-controlled detector, operating to effect stoppage of the loom.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' WILLIE G. EATON. Witnesses:

L. I. MINARD, W. E. KITTREDGE. 

